Hitachi 9900 Series User Manual

1Introduction The Only Switched-Fabric Storage Architecture in the WorldThe Hitachi Freedom Storage™Lightning 9900™Series internal switched-fabric sto

Product Characteristics 9960 9910Number of Cabinets 2-7 1Maximum Cache Capacity 32 GB 16 GBNumber of Fibre Channel/ESCON®Ports Up to 32 Up to 24Numbe

At the heart of the Lightning 9900™Series’ enormous capacity for throughput liesthe Hi-Star™architecture. This network of interconnecting high-speed l

Comparison to the Shared Bus Architecture of the Hitachi FreedomStorage™7700EUnlike the shared common bus architecture of previous generation storage

Other Information Sources Available from Hitachi Data Systems®Additional information on the enterprise storage market, including an in-depthoverview o

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7The Lightning 9900 SeriesPackaging Model 9960 PackagingThe Lightning 9960™is available in a two to seven cabinet configuration (as shown onthe cover

Model 9960 Array FramesArray frames 1-4 of the 9960 contain up to 96 Hard Disk Drive Assemblies (HDDs)and communication interfaces to the Control Fram

Cables carry 48-volt main system power from the back of the Control Frame and ArrayFrame where the power is converted to the required voltages.Differe

The System Monitoring Network of the Lightning 9900™SeriesThe Lightning 9900™Series systems are designed with a system-monitoring network.The system m

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11Front-end Design of theHitachi Lightning 9900SeriesCHIPs Support Fibre Channel Host and ESCON®or FICON Host Connectivityand ScalabilityThe Lightning

About the Fibre Channel Interface BoardsEach Fibre Channel Interface Board, as shown in Figure 9, has four InterfaceProcessors2for management of conne

There are four ports for each interface board or a total of 32 host interfaces for a fullyconfigured system. An ESCON interface board is shown in Figu

Bandwidth of Supported Host Interfaces The bandwidth of interfaces supported by the Lightning 9900™Series is shown inTable 2. Supported Interface Band

15Hi-Star Architecture – AnInternal SwitchedHierarchical Star NetworkThe Internal Hi-Star ArchitectureThe internal Hi-Star architecture consists of tw

The Cache Switch Provides Non-blocking Switched Access to CacheAt the heart of the C-HSN is the Cache Switch (CSW). Together, these four switches(in t

In a shared bus storage system, the number of internal simultaneous processoroperations that can occur is equal to the number of buses on the backplan

The 9960 Provides 32GB of Fully Addressable CacheThe 9960 supports up to 32GB of data cache, all directly addressable. Separate cachemodules (up to 1.

control memory in its “split” configuration. Again, control memory is mirrored. This pathtopology is used to facilitate this mirrored architecture. E

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21High Performance Back-endDesign High-speed Back-end DesignNew Hitachi high-performance back-end drives are available with the Lightning 9900™Series.

These new dual-ported/dual-active Fibre Channel disk drives, combined with thetechnology built into the ACP pair, allow the back end of the Lightning

23Capacities and RAIDArchitectureStorage Capacity of the Lightning 9900™SeriesThe Lightning 9900™Series supports an unmatched range of capacities as s

High-density Disk Drive Assemblies (HDDs)The disk drives used in the Hitachi Lightning 9900™Series are specially designed forhigh availability and per

Table of ContentsTable of Contents...

Advanced Cache Algorithms of the Lightning 9900 Series ...18Hitachi FlashAccess All

Chapter 9 – The Lightning 9900 Series Software Solutions Are the Best in the World ______________33Increased IT service levels in availability and per

Hitachi NanoCopy Implementation Service...46Continuous Availability

viiTable of FiguresFigure 1 The 9960 provides for exploding growth and data consolidation while the 9910 provides for managed

Hitachi Data SystemsviiiTablesTable 1 Comparison of the Lightning 9900 series models................2